Specifications

Bunn-O-Matic Corporation
19
Preventative Maintenance
In order to maintain proper operation and long service life BUNN recommends performing the preventative main-
tenance every 6 months. Individual customers will vary with some customers choosing not to receive preventative
maintenance.
Tools Required:
Slotted screwdriver □
11/32 nut driver □
1/4 Nut driver □
Slip-Joint Pliers □
Needle-nose pliers □
Deliming key (BUNN P/N: 38227.0000) □
Prior to servicing the brewer:
Disconnect the electrical supply □
Shut off the water supply □
Remove the top panel □
Remove the front panel □
Drain the tank (see below) □
Draining the Tank
Step 1: Use a slotted screwdriver to remove the 6 or 8 screws securing the front
panel onto the chassis, remove the panel
Step 2:Locatethehoseclamponthelltube,andclampoffthewaterline
Step 3:Removetheclipsecuringthebottomendofthelllinetotheinletvalve
and remove the line from the inlet valve
Step 4: Place the water line over a sink or bucket and remove the hose clamp to
allow the tank to drain
PM Procedures
Step 1: Disassemble and clean the strainer assembly
Useslip-jointplierstoremovethe¼”areto¾”hosethreadadapterttingfromthewaterinletassembly □
Use needle-nose pliers to gently pull the strainer straight out □
Rinse the mesh screen to remove any debris build-up □
Reassembly is the opposite of disassembly □
Step 2: Remove and clean the thermistor
Gently pull the thermistor from the grommet in the top of the tank □
Wipe any mineral build-up from the probe □
Reinstallation is the opposite of removal □
Step 3: Remove and clean the liquid level probe
Gently pull the liquid level probe out of the grommet □
Wipe any mineral deposits off of the probe □
Reinstallation is the opposite of removal □
Step 4: Remove and clean the sprayhead(s)
Using the pointed end of the deliming key, remove any mineral build-up from □
the sprayhead outlet holes
Step 5: Rebuild the dispense valve(s)
Remove the hose clamps that secure the tubing to the valve □
Remove the two 11/32 nuts that hold the solenoid bracket to the machine □
Gently remove the tubing from the valve body □
Using a 1/4 nut driver, remove the four screws and separate the valve assembly □
Replace plunger, spring, and rubber seat using the rebuild kit BUNN P/N: 11517.0008 □
Clean any mineral build-up from the dispense valve □
Reassembly is the opposite of disassembly □
Dispense solenoid
By-pass solenoid
Sprayhead
Machine
back panel
T o bottom of tank